Tube rack tool



FIG. 1 is a perspective view of a tube rack tool;

FIG. 2 is a perspective exploded view of the base and top portion of a tube rack tool;

FIG. 3 is a front elevation exploded view thereof;

FIG. 4 is a rear elevation exploded view thereof;

FIG. 5 is a right side elevation exploded view thereof;

FIG. 6 is a left side elevation exploded view thereof;

FIG. 7 is a bottom plan exploded view thereof; and,

FIG. 8 is a top plan exploded view thereof.

The broken lines depicted in FIGS. 1-8 illustrate portions of the tube rack tool that form no part of the claimed design. 

CLAIM The ornamental design for a tube rack tool, as shown and described. 